12717442 has 4 divisors (see below), whose sum is σ = 19076166. Its totient is φ = 6358720.

The previous prime is 12717437. The next prime is 12717443. The reversal of 12717442 is 24471721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24471721 = 17 ⋅1439513.

It can be written as a sum of positive squares in only one way, i.e., 11553201 + 1164241 = 3399^2 + 1079^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12717442.

It is not an unprimeable number, because it can be changed into a prime (12717443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3179359 + ... + 3179362.

Almost surely, 2^12717442 is an apocalyptic number.

12717442 is a deficient number, since it is larger than the sum of its proper divisors (6358724).

12717442 is an equidigital number, since it uses as much as digits as its factorization.

12717442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6358723.

The product of its digits is 3136, while the sum is 28.

The square root of 12717442 is about 3566.1522682017. The cubic root of 12717442 is about 233.4174150490.

The spelling of 12717442 in words is "twelve million, seven hundred seventeen thousand, four hundred forty-two".